Hello Mohamad Nassar,

It is recommended to use a virtual environment when working with Python projects, to avoid conflicts with different versions of packages and Python itself. Here are the steps you can follow to create a virtual environment and install the required packages for your Odoo project:

1. Open a terminal and navigate to the root directory of your Odoo project.
2. Create a virtual environment using Python 3.8: python3.8 -m venv env
3. Activate the virtual environment: source env/bin/activate
4. Upgrade pip: pip install --upgrade pip
5. Install the required packages for your Odoo project: pip install -r requirements.txt

By using a virtual environment, make sure that the required packages are installed for the correct version of Python.

If you continue to encounter errors during installation, you may need to review the contents of your requirements.txt file and ensure that all dependencies are listed correctly. You may also need to check for any system dependencies that are required for specific packages to install correctly..

Hope it will be helpful to you.

Thanks & Regards,
Email: odoo@aktivsoftware.com
Skype: kalpeshmaheshwari